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2. Woodchipper - Wikipedia

   en.wikipedia.org/wiki/Woodchipper

   Industrial-grade chippers (tub grinders) are available with discs as large as 4 m (160 in) in diameter, requiring 3,000 to 3,700 kW (4,000 to 5,000 hp). One application of industrial disk chippers is to produce the wood chips used in the manufacture of particle board .

3. Woodchips - Wikipedia

   en.wikipedia.org/wiki/Woodchips

   A screw-type wood chipper contains a conical, screw-shaped blade {citation needed}. The blade rotation is set parallel to the opening so wood is pulled into the chipper by the spiral motion. Screw-type, also called high-torque rollers, are popular for residential use due to being quiet, easy to use and safer than disk and drum types. [15] [17]

4. Woodworking machine - Wikipedia

   en.wikipedia.org/wiki/Woodworking_machine

   A Woodworking machine is a machine that is intended to process wood. These machines are usually powered by electric motors and are used extensively in woodworking. Sometimes grinding machines (used for grinding down to smaller pieces) are also considered a part of woodworking machinery. [1]

5. Wood industry - Wikipedia

   en.wikipedia.org/wiki/Wood_industry

   Wood is relatively light in weight, because its specific weight is less than 500 kg/m 3, this is an advantage, when compared against 2,000–2,500 kg/m 3 for reinforced concrete or 7,800 kg/m 3 for steel. [citation needed] Wood is strong, because the efficiency of wood for structural purposes has qualities that are similar to steel. [citation ...

6. Talk:Woodchipper - Wikipedia

   en.wikipedia.org/wiki/Talk:Woodchipper

   4 Does someone know who invented the tree chipper? 1 comment. 5 Original woodchipper discussion. 4 comments. 6 Sawdust Controls. 1 comment. 7 City services. 1 comment.

7. International Standard Industrial Classification - Wikipedia

   en.wikipedia.org/wiki/International_Standard...

   The International Standard Industrial Classification of All Economic Activities (ISIC) is a United Nations industry classification system. Wide use has been made of ISIC in classifying data according to kind of economic activity in the fields of employment and health data. It is maintained by the United Nations Statistics Division. [1]